opponent vs hostile

opponent and hostile both are nouns.

Word	Noun	Adjective	Verb	Adverb
opponent	Yes	Yes	No	No
hostile	Yes	Yes	No	No

opponent (noun)	hostile (noun)
someone who offers opposition	troops belonging to the enemy's military forces
a contestant that you are matched against

opponent (adjective)	hostile (adjective)
characterized by active hostility	characterized by enmity or ill will
	not belonging to your own country's forces or those of an ally
	unsolicited and resisted by the management of the target company (used of attempts to buy or take control of a business)
	very unfavorable to life or growth
	impossible to bring into friendly accord